31450452102420 has 288 divisors, whose sum is σ = 103199050515456. Its totient is φ = 7108542873600.

The previous prime is 31450452102389. The next prime is 31450452102457. The reversal of 31450452102420 is 2420125405413.

It is a super-2 number, since 2×31450452102420² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7540765 + ... + 10943675.

It is an arithmetic number, because the mean of its divisors is an integer number (358330036512).

Almost surely, 2^{31450452102420} is an apocalyptic number.

31450452102420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31450452102420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51599525257728).

31450452102420 is an abundant number, since it is smaller than the sum of its proper divisors (71748598413036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31450452102420 is a wasteful number, since it uses less digits than its factorization.

31450452102420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3403011 (or 3402992 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 31450452102420 its reverse (2420125405413), we get a palindrome (33870577507833).

The spelling of 31450452102420 in words is "thirty-one trillion, four hundred fifty billion, four hundred fifty-two million, one hundred two thousand, four hundred twenty".